190 SAXIFRAGACE7E. sullivantia. 



BOYKINIA. 



5 SULLIVANTIA T. & G. 



Slender herbs with running roots, palmately veined leaves 

 and small flowers in paniculate cymules. Calyx campanulate, 

 coherent with the base of the ovary, 5-cleft. Petals 5, broad, 

 entire, alternate with the calyx-lobes, withering-persistent. Sta- 

 mens 5, shorter than the petals. Ovary 2-celled, with the 

 placentae in the axis, many-ovuled : carpels united to the middle, 

 the beaks flat and early open down the inner side. Seeds numer- 

 ous, wing-margined. 



S. Oregana Watson Proc Am. Acad. xiv. 292. Smooth below, pubes- 

 cent and glandular above : stems slender, 3-10 inches high, sparingly leafy, 

 from slender running rootstalks : propagating by long filiform runners : 

 leaves round-cordate, 1-2 inches in diameter, Jaciniately cut and toothed, 

 on long petioles with dilated scarious base : flowers numerous, in an elong- 

 ated panicle; calyx campanulate; with acute triangular lobes ; petals white, 

 oblong-ovate, obtuse, a half longer than the calyx-lobes, somewhat cuneate 

 at base : carpels membranaceous, the beaks exserted and slightly diverging 

 in fruit : seeds oblong, dark brown and shining, narrowly winged. On 

 wet cliffs along the Columbia river near the Cascades, and at hlk Kock on 

 the Willamette. 



6 BOYKINIA Nutt. Jour. Acad. Philad. vii, 113. 

 Perennial herbs with creeping caudex, alternate leaves with 

 dilated stipule-like base and corymbose cymes of white flowers. 

 Calyx campanulate, adnate to the lower part of the ovary, the tube 

 at length urceolate, the limb spreading, valvate in the bud. Petals 

 5, entire, deciduous. Stamens 5, inserted in the throat of the 

 calyx, shorter than its segments : anthers 2-celled. Styles 2-3, 

 short : stigmas simple. Capsule 2-3-celled, with a central many- 

 seeded placentae, 2-3 beaked, dehiscent between the beaks. Seeds 

 small, ovoid, with a close somewhat crustaceous testa, very 

 minutely and evenly papillose. 



B. major Gray Bot. Cal. i, 196. Sparingly pubescent; glandular 

 above: stems stout, 1-3 feet high, from a creeping lignious caudex : leaves 

 round-reniform, deeply 5-7-lobed, the lobes irregularly toothed and cut, 

 2-8 inches in diameter, the lower on long slender petioles with merely en- 

 larged base, the upper similar but smaller, on shorter petioles with foliaceous 

 stipular base: flowers many, in a corymbose at length elongated cyme; 

 calyx campanulate, the lower half of the tube coherent with the ovary, 

 enlarging and becoming urceolate in fruit; petals white, rounded above, a 

 little longer than the triangular acute erect calyx-lobes: carpels united to 

 above the middle, erect, the tips of the beaks divergent in fruit. In 

 mountain streams, Oregon and California. 



!!• occiden talis T. & G F\ i, 577. Sparingly pubescent with fuscous 

 hairs: stems rather slender, erect or declined, 1-2 ieet high, from a creep- 

 ing somewhat woody caudex: leaves round-cordate, incisely 3-9-lobed, the 

 lobes 3-5-toothed, 1-2 inches in diameter, all on slender petioles with dilated 

 ciliate base: flowers numerous, in elongated paniculate cymes; calyx cam- 

 panulate, adherent to the lower half of the ovarv, enlarging and becoming 

 urceolate in fruit; petals white, early deciduous, spatulate, narrowed 

 below to a long claw, 2-3 lines long, much longer than the acuminate 

 calyx-lobes: carpels united to the middle, the long slender beaks slightly 

 diverging. Common along mountain streams, western Washington to 

 California. 



